Look at items 44, 45, 49, 50 & 51.
Item 51 is rounded on one end which goes into the actuator arm [item1]
Items 18 & 19 are the threaded adjuster & locknut in the center of the clutch basket which you see after removing the clutch inspection cover on the left side of the motor.

Item#45 [roller] qty 2 - 5/16" x 5/16"
Item#49 [roller] qty 2 - 6mm x 6mm
Item#50 [ball] qty 1 - 5/16"

For a happy clutch, it is important to remove all these items, clean and smooth with a scotchbrite, grease and reinstall. The adjustment should leave about 1+mm between the actuator arm and the sprocket cover when set up right. The clutch cable should be routed with large arcs so it won;t bind and 3-4mm freeplay at the hand lever.
